5-Pack Everbilt Bolts/Screws 1/2 in. x 1 in. x .257 I.D. Nylon Spacer 815018
X. 257 I.D. Nylon Spacer 815018. Designed for use with bolts and screws, this nylon spacer is both lightweight and non-magnetic. Used for adjusting the space between two objects while providing vibration and corrosion resistance.